115: Examining Plant Nutrient Mobility with SAP Analysis

Plant SAP analysis gives farmers insight into how the plant can take up and mobilize nutrients. Traditional tissue testing is usually done at the top of the plant, sampling only the youngest leaves. SAP Analysis is actually a pair of tests, comparing nutrients in young and old leaves to see what is being taken up today and how the nutrients are moved around. Test results compare levels in young and old leaves across 24 different nutrients. One important comparison is Nitrogen efficiency, so the farmer can see how much Nitrogen is actually being taken up by the plant and calculate a cost analysis. Learn more about SAP Analysis and also some fascinating research about the relationship between silica, iron, and aluminum in grapevines. References: 72: Soil Microbes and Nutrient Availability 113: Microbial Inoculants for Soil Health Jenny Garley on LinkedIn Making Nitrogen & Potassium Fertilizer Decisions in the Vineyard NEWAGE Laboratories SIP Certified Sustainable Ag Expo Get More Subscribe on Google Play, iHeartRADIO, iTunes, Spotify, Stitcher, TuneIn, or wherever you listen so you never miss an episode on the latest science and research with the Sustainable Winegrowing Podcast. Since 1994, Vineyard Team has been your resource for workshops and field demonstrations, research, and events dedicated to the stewardship of our natural resources. Learn more at www.vineyardteam.org.